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F. w. OSTROM AND I.'F. WEBB,

FILLED SACK SEWING APPARATUS. APPLICATION FIILEDYJAN.2II 1919.

' 1 #377,624. Patented May 10, 1921.

3 SH EETS-SHEET I.

WITNESS v v J eeZQuZ Z I Z Z 7" 3 ram QMWWM BY 'jfi wmea,

ATTORNEY F. w. OSTROM AND I. F. WEBB.

FILLED SACK SEWING APPARATUS APPLICATION FILED JAN. 21. 1919.

-3 SHEETSSHEET 2- I Patentd Ma 10,192 1.

F. W. OSTROM AND I. F. WEBB.

FILLED SACK SEWIN'G APPARAT US.

- APPLICATION FILED JAN.2I, 19m.

1,37 7,624. Patented May 10,1921.

3 SHEETS-SHEET 3.

WITNESS I INIY E TgTOZRS ZZ redand .9 ram N .fir ylm,

UNITED STATES PATENT OFFICE. f1 1 FREE-LAND w. 05mm; 01* News:ANDIRVING- r. wnimiorinniznnnrn, I I

MANUFACTURING COMPANY, n oonrorm JERSEY, ASSIGNORS TO THE SINGER TION.9FNEW JERSEY. i

; FILLEfD-SA'CK-SEWING ArrAnArus. i

To all whom it'moy concern: 7 I Be it known that we, FREELAND Os-TRoM'andIRvINe F.- WEBB, citizens of the United States, residing,respectively, at Newark, inthe county of Essex and State of New Jersey,and Elizabeth, in thecounty of Union and State ofNewT Jersey, haveinvented .certain new and useful Improve- V. ments inFilled-Sack-Sewing. Apparatus, of

which the following is a specification, refer- I ence being hadthereinto the accompanying 7 drawings.

This invention relates to improvements in filled sack sewing apparatusand has for its primary object to provide aconstruction re ducing themanual handling of the filled sacks to a minimum. r

. In the sewin'g of filled sacks, frequently r happens, throughinadvertence onthe part of the operator innot holding'themouth of thesack in the proper positionpthat the stitching runs off the upper edgeofthe sack thereby leaving a portion-of its mouth unstitched. Further,filled sacks of the larger sizes are .usually double, including an inneror lining sack of closely woven material and an outer sack of morecoarsely woven mate rial such as burlap. In thesewingof, the mouths ofthese double sacksit frequently happens, again through inadvertence' onthe part of the operator, .that the inner sack I mouthis not caught by.the line of stitching. I In both-of these cases, and in others such asthe breaking of thread, &c., it has heretofore been necessary in highspeed machines which employ an endless sack-carrier to manually carrythe sacksback to the starting point in order to repeat the sewingoperation. v

In the present machine a simple mechanism is provided to mechanicallyreturn sucks to the starting point by the employment of means for.reversing the direction ofmovement of the carrier.

This invention has a further object to provide means forautomaticallycontrolling the reverse movement of the carrier todetermine the starting pQS1l'/1OI1 of the sack relative to the sewingmechanism for .restitching V of the mouth of saidsack and toadditionally provide manually operable means whereby Specification ofLetters Patent; Patented May lo, 1921 Application 'filed January21,1919; seria1'm. 272,25 1.

jeot to improve the treadle mechanisms employed for controllingthedrivingconnections of the sack sewing and conveying/(1e vices by the.provision of treadles whereby the operator is enabledto stand firmlywith I parent from thefollowing description and claims.

direction of travel of the carrier is Within. v p

In theaccompanying drawings, Figure l 1s a rearsideelevation of a filledsack sew-' ing apparatus embodying the present improvements. ,F g. 2 isan end elevation'of the apparatus asviewed from the right in Fig. 1.'Fig.3isa sectional viewfsubstan- "tially on the line sc at, of Fig. 2-,with a portion of the sack carrier and its driving motor partly cut awayto better illustrate the drive controllingconnections. Fig. 4 is aillustration of the lever automatically condetail sectional view of thedriving clutch and the reversing'gearing. Fig. 5 is a detail whereby themovement ofthe carriermay at all timesbe manually controlled. 1

Referring to the drawings, thereis here-in illustrated a form offilledsack sewing ap "paratus .COIIIPIlSlIlgfEL base l upon which-is suitablyhinged a platform 2. Projecting W upwardly Ifromthe basel are standards3 and 4 adapted to support atable'5'. Suitably secured upon the table 5is an L-shaped bracket 6 sustaining'the overhangingsewing.

head 7, employing any suitable form of stitch-forming mechanism andincluding a loose pulley 8 and a'fast pulley 9. V p A motor supportingbracket 10 is'also suitably secured upon the table '5 and sustains'amotor 11 provided with a drivingpulley12. g

A belt 13 is employedtotransmit power from the pulley 12 tothe' fastpulley 9,

treadle connectionsbeing provided to shift the belt from the fast totheloose pulley whenit is desiredto stop the stitching op eration. Inits preferred formthese conbrake element 16' adapted. to act upon the Ifast pulley 9 when the belt is shifted to the loose pulley. Thebelt-shifting lever 14 is pivotally supported intermediate its ends uponan arm 17 suitably secured to the bracket 6 and is connected preferablyby means of a flexible element 18 with one end of a bell-crankrock-lever 19 pivoted upon a bracket 20, suitably secured uponthebase 1. The other end of the rock-lever 19 is adapted to be engagedby the rear end of a' footoperated lever or treadle 21 pivotallysupported intermediate its ends by means of a screw 22 upon a plate 23suitably secured upon the base 1. The forward end of the lever 21 isprovided with an up-turned 11p 24 adapted to be engaged by the foot ofan operator and swung to the right as viewed in Fig. 3 to start astltchlng operation. During a belt 29 passing around an idle roller j ofsmall rollers as 33.

30 and a driven roller 31 both journaled in a conveyer frame 32. Tosupport the belt against the weight of the filled sacks, the conveyerframe is provided with a plurality The conveyer frame 32 is adapted tobe adjusted vertically by the provision thereon of lugs 34 and 35 formedwith threaded apertures entered by vertical screw-rods 36 and 37suitably journaled in bearings provided in the standards 3 and 4, saidstandards supporting and guiding the lugs and therefore the conveyerframe. At their ends the screw-rods 36 and 37 respectively carry bevelgears 38 and 39 meshing with similar gears 40 and 41 upon the horizontalshafts 42 and 43. The shafts 42and 43 are journaled in suitable bearingsprovided for the purpose upon the under side of the table 5 andrespectively carry manually operated crank-handles 44 and 45. It will bereadily apparent that rotation of the crank-handles adjusts the verticalposition of the conveyer frame.

Projecting rearwardly from the conveyor frame 32 is a bracket 46carrying a motor 47 provided with a sprocket-gear 48. This sprocket-gearis connected by means of a chain 49 with a similar gear 50 carried by ahorizontal shaft 51 journaled in bearings, as 52,-on a bracket 53secured by screws as 54, to the conveyer frame 32. The shaft 51 carriesa worm 55 adapted to drive a wormwheel 56 on a vertical shaft 57journaled in a bearing 58 provided on the bracket 53. Se-

cured to the shaft 57 is a bevel-gear 59 constantlyin mesh with twobevel gears 60 and 61 loosely supported for rotation upon a shaft 62 andheld against endwise movement by hearing lugs, as 63 on the bracket 53.

Secured upon the shaft 62 by means of a screw 64 is a reversing clutchelement 65 formed with teeth as 66 adapted to engage the teeth, as 67upon the bevel-gear 60 or the teeth 68 upon thebevel-gear 61 or be in aneutral position. In order to cause the clutch-element to drive eitherof the bevelgears 60 and 61 the shaft 62 is slidingly mounted in thebearing lugs 63 and the clutch element 65 secured thereupon is formedwith a peripheral groove 69 entered by a stud 7 0 carried by a shiftinglever 71 fulcrumed upon the bracket 53. In order to permit verticaladjustment of. the conveyer frame the rearward end of the shifting lever71 is provided with a fork entered by a rod 72 secured upon lateral arms74 and 75 projecting respectively from sleeves 7 6 and 7 7 mounted forpivotal movement upon a vertical rod 78 supported by suitablebrackets as79 secured upon the table 5 and the base 1. To the upper sleeve 76 issecured a rod 80 having a sack contacting plate 81 adjustably securedthereto. The plate 81 may obviously be secured upon the rod in positioneither to throw the reversing clutch element into neutral position whenthe sack contacts with said plate or it may be secured nearer the end ofthe rod 80 to thereby completely reverse the direction of movement ofthe carrier, as may be desired; In either event, the connectionsdescribed form means for automatically controlling the reverse movementsof the carrier.

The movement of the carrier may however be entirely controlled at thewill of the operator by a hand-lever 82 secured to the rod. 80 andprojecting through a slot 82 in the table 5. This lever 82 is shown asprovided with a spring actuated detent 83 adapted to engage notches as84 formed in a plate 85 suitably secured upon the table 5( The rod 80 isadapted to be retained until manually or automatically released, in anyof three positions, 2'. 0., that of forward drive, reverse drive or inneutral position by means of a notched position-determining plate 80secured to the under side of the table 5.

Secured u on the shaft 62 by means of a pin 86 is a anged sleeve 87. Theflange of this sleeve is formed with apertures entered by pins as 88projecting from a clutch-element' 89 slidingly mounted on said sleeveand formed with a plurality of teeth 90. The teethof the clutch element89 are adapted to interlock with similar teeth 91 formed on acomplemental clutch element 92 pinned to a shaft 93 upon which thebelt-roller 31 is secured. In order to throw these clutch elements intoand out ofinterengaging relation, the element. 89 is. formediwithl aperipheral notch 94rentered: at diametrically opposite sides thereof" bystuds, as ;95 cari so rled by the forked end of] a shifting lever 96fulcrumed by means of. screw, 97 upon the bracket 53.1 Inorder topermitvertical adjustment of the carrier the tail end of: the shiftingleverj96 is. heldrini contact with a vertical rod 98 by means. of a:spring 99,- one end of whichis secured to the lever 96 and the other'endto the conveyer frame:

The vertical rod 98iscarriedfby lateral arms 100 suitably-secured uponthe vertical rod 78. A collarf101 also securedto said rOd 78 carriesalaterally-extendingrarm 102 connectedsby means of a: chain 103,pwith-Ja crank-arm 10 1 carried by a treadle actuated rock-shaft 105.The rock-shaft 105iS-1j0111 naled in bearings as 106 suitably securedupon the base 1 and at its forwardend carries a laterally. projectingcurved treadle 107, in :normal' position extending from the shaftdownwardly through a ;slotl1,08

formed in the plate 27, thence upwardly above the upper surface of saidplate and thence downwardly to. a point adjacent the lip 2450f thetreadle levera21'. Thettreadle 107 is normally held in theraisedlposition indicated inrFig. 1 of the drawings inaddition to theaction of the spring-99 bymeans of aspring 109, coiled about the shaft105 and ofwhich one end bears 'against 'the 'base '1 and the other endagainst a pin-110'se' cured to said shaft. .An e adjustable' stop pin111 secured to the shaft 105 and adapt ed to contactwith the basel'determin'es the normal raised position ofthe treadle 107. Normallyinthe operationof' sewing the mouths of filled sacks, the clutchelementis in driving engagement with the gear wheel 60 to drive thesackecarrier 29 to the left as viewed in Fig.3, the' motors operating'to' continuously drive thesewing ,machine belt 13 and the chain 49.- JAfilledsack having been placed upon-the carrier, the operator steps onthetreadle-107i which is thereby depressed in substantially a vertical'plane to, through the connections described,

slide the clutch element 89 uponthe sleeve 87 and into drivingengagement withv the clutch element 92. The carrier 29 is now. in

operation to present the sack ream sewing mechanism :01 be stitched andnormally 'the movement of'the carrier is continuously'f maintained inthis direction during theisewf ing of a largenumber of sacks. I

As the s ack approaches the stitch-forming mechanism, the operatoradjusts the mouth "of the sackto properly present the same to bestitched. vThe operator then starts ;the operation or the sewingmechanism by swinging his foot'to the right, (ma ntain ing the treadle107 depressed) thereby actu ating thetreadle 21 in substantially ahorzontal plane and through ithefdescribed' con-' ne'chanism' areinoperation. 7

7 nectionsshiftingthe belt from the loose pulleyi8 to thetight, pulley9.. After the sew ngoperation is completed, the treadle 21 is released1' by.- a return swinging move- I ment of the operators foot, whichremains however, upon the treadle 107 "The weight 1 15,- upon: the]lever :14 is suflicient' to return the treadle 21 to its original,position; 7 It may be here: observed f that the curvature of thetreadle'107 isvsuch that when the treadle 21"is operated to {start thestitch-forming mechanism, tliefoot of; the operator over lies thedownwardly inclined portion of the --treadle 107iWhlCh; adjacent thefoot of the operator rises somewhat above the plane-of the;b'ase 1,.'1This' construction acts to offset any tendency 1 011! the part of theoperator to, unconsciously withdraw: his 1001311 130111 theftreadle21:1before-the sewing operation e is; completed.;-i "It-'willbe furtherobserved thatthe present arrangement ofthe treadles 121 and 107i ishighly advantageous in that they permit of their, operation withoutanyparticular "attention on the part ofthe op 'erator who stands firmly onthe floor? 01 platform while the carrier and the sewing vIfvforanyreason-such as heretofore meno rtioned it; becomes necessary jto repeat the stitchingfoperation of afilled sack that has traveled pastthe sewingheadfit is' only riecessaryto throw the hand-lever 82 in-re-'versing pfosit-ionand the carrier 29 willconvey the sack inthereverse'direction past and without operatin-gthe sewing mecha 1'nism. "The carrier 29. may nowibe stopped }either by releasing thetreadle 107, by shifting the hand-lever '82 into neutral position or bypermitting the plate 181t 0 automaticallyarrest the carrier preparatoryto read justing themouthjofthe'sack. If the re'-' adjustment necessaryis very slight, it may be 'made -while the-carrier '29 is in' motion,

- the-hand-lever-82 being operated to again veying a 'filled; sack pastsaid sewing. meche anism, of driving 'means for said carrieriin cluding-aconnection permitting thecarrier 125 to be freelymoved in 1 oppositedirections.

'2. In a filled rsack sewingvapparatus, the

combination witha framework, a sewing flmechanisnn and anlendlesscarrier for con veying affilled sa'ckpast said-sewing mech- "1;Inafilledsack sewing apparatus, the1-120 7 anism, of driving means forsaid carrier including gearing, and a connection between the gearing andcarrier for permitting the carrier to be freely moved in oppositedirections.

3; In a filled sack sewing apparatus, the combination with a framework,a sewing mechanism, and an endless carrier for conveying a filled sackpast said sewing mechanism, of driving means for said carrier includinggearing, a clutch intermediate said gearing and the carrier, andmanually operable means for shifting said clutch to permit the carrierto be freely moved in opposite directions.

4. In a filled sack sewing apparatus, in combination, a framework, asewing mechanism, an endless carrier for conveying a filled-sack pastsaid sewing mechanism, and means for driving said endless carrier inreverse directions.

5. In a filled sack sewing apparatus, in combination, a framework, asewing mechanism, driving means for said sewing mechanism, an endlesscarrier for conveying a filled sack past said sewing mechanism, drivingmeans for said carrier, treadle-connections whereby said-driving meansmay be controlled independently of each other, and means for reversingthe direction of-drive of said carrier.

6. In a' filled sack sewing'apparatus', in combination, a framework, asewing mechanism, an endless carrier for conveying a filled sack pastsaid sewing mechanism, reversible driving means for said carrier, andwork controlled means for controlling the effective action of saiddriving means.

7. In a filled sack sewing apparatus, in combination, a framework, asewing mechanism, an endless carrier for conveying a filled sack pastsaid sewing mechanism, means for driving said endless carrier in reversedirections, and means for automati- Cally arresting the carrier whendriven in one of said directions.

8. In a filled sack sewing apparatus, in combination, a framework, asewing mechanism, an endless carrier for conveying a filled sack pastsaid sewing mechanism,

driving means for said endless carrier, treadle connections forcontrolling the effective action of said driving means, and manuallycontrolled means for reversing the direction of movement of said carrierwhile 7 1 verse directions, and manually controlled mechanisms forarresting the carrier operating in each of 'Sfi-ld reverse dlrectlons.

10. In a filled sack sewing apparatus, 1n

combination,.a framework, a sewing mechanism, an endless carrier forconveying a filled sack past said sewing mechanism, means fordriving'said carrier in reverse directions, and means for manuallycontrolling the direction of movement of said carr1er.

11. In a filled sack sewing apparatus,.in

combination, a. framework, a sewing mechanism, an. endless carrier forconveying a filled sack past. said sewing .mechanism, means for drivingsaid carrier in reverse directions, treadle connections for arrestingthe effective action of said driving means in mechanism, a' motor,driving connections between said motor and said sewing mechanism,treadle connections for controlllng the effective actionofsaid drivingmeans, an

adjustable frame for supporting said endless carrier, and a motorsustained by said frame and adapted to drive said carrier in reversedirections. 4

13. In a filled sack sewing apparatus, in combination, a framework, asewing mechanism, a. carrier for conveying filled sacks past said sewingmechanism, a supporting frame for said carrier, a motor sustained bysaidsupporting frame, and driving connections intermediate said motorand said carrier including a carrier reversing mechanism. 7

'14. In a filled sack sewing apparatus, in combination, a framework, asewing mechanism, a carrier for conveying filled sacks past said sewingmechanism, means for positivelydriving said endless carrier in reversedirections, and an arm projecting into the path of said filledv sackwhen said carrier is driven in one of said directions to automaticallycontrol the effective action of said driving means. 1

15. In a filled sack sewing apparatus, in combination, a' framework, asewing mechanism, driving, means for said sewing mechanlsm, an endlesscarrier for conveylng filled sacks past. said sewing mechanism, drivingmeans. for. said endless carrier, a treadle operable in substantially ahorizon tal plane for controlling the effective action of one of saiddrivingmeans,and a treadle operable in substantially a vertical planefor controlling the effective action of the other of said driving means.r

16. In a filled sack sewing apparatus, in combination, a framework, asewing mechanism, driving means for said sewing mechanism, a carrier forconveying a filled sack past said sewing mechanism, driving means forsaid carrier, and treadles operable 1n substantially transversedirections withresaid sewing mechanism and said carrier, one

of said treadles'tending to maintain the operators foot against theother treadle in the stitching of a filled sack.

18. In a filled sack sewing apparatus, in

combination, a framework, a sewing mechanism, driving means for saidsewing mechanism, a carrierfor conveying. a filled sack past said'sewing mechanism, drivin means 7 for said carrier, a treadle for controling the sewing, mechanism driving means, and a treadle for controlllngthe carrler driving means and operable in a direction transverse to thatof the other treadle, said treadles being contiguously arranged andadapted to be operated successively and in-' dependently each of theother by a single foot of an operator.

I In testimonywhereof, we have signed our namesto this specification.

, FREELAND w. osTRoM- IRVING r. WEBB. V

